HD64F3048VTF8 Renesas Electronics America, HD64F3048VTF8 Datasheet - Page 682

• Manufacturer Part Number: HD64F3048VTF8
• Description: IC H8 MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3048VTF8

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F3048VX8

Section 20 Clock Pulse Generator
Crystal Resonator: Figure 20.3 shows an equivalent circuit of the crystal resonator. The crystal
resonator should have the characteristics listed in table 20.2.
Table 20.2 Crystal Resonator Parameters
Frequency (MHz)
Rs max ( )
C
Use a crystal resonator with a frequency equal to the system clock frequency ( ).
Notes on Board Design: When a crystal resonator is connected, the following points should be
noted:
Other signal lines should be routed away from the oscillator circuit to prevent induction from
interfering with correct oscillation. See figure 20.4.
When the board is designed, the crystal resonator and its load capacitors should be placed as close
as possible to the XTAL and EXTAL pins.
Rev. 7.00 Sep 21, 2005 page 656 of 878
REJ09B0259-0700
0
XTAL
max (pF)
Figure 20.3 Crystal Resonator Equivalent Circuit
500
2
L
120
4
C
L
80
8
C
0
10
70
7
AT-cut parallel-resonance type
Rs
12
60
16
50
EXTAL
18
40